A "cab replacement program" will enable Nikola fuel cell-electric chassis to be reused "over and over again," the company's founder said, answering one of many questions answered at the launch event last month.

A hybrid electric-drive trailer tandem being developed by a group of engineers at Hyliion Inc. in Pittsburgh, Pa. The device, which for now has no official name, is undergoing road testing and should be ready for the market in mid-2017,